Johnstown, CO 14 Day Weather - 80534 WeatherWorld.com
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Johnstown, CO Weather Forecast


Johnstown, CO Weather Forecast Dated: 920 PM Sat Sep 05 2026
Expect a very warm period with a mix of sun and clouds and mostly dry weather over the coming period. comfortable humidity and no major pressure swings will dominate.
Saturday, September 5, 2026
Mid-Morning
73°F 23°C
Sunny
Mid-Afternoon
95°F 35°C
Overcast
Early-Evening
87°F 31°C
Overcast
Very hot with temperatures reaching 95°F 35°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the NNW to the WNW at 6 mph 10 km/h.
Sunday, September 6, 2026
Mid-Morning
73°F 23°C
Partly Cloudy
Mid-Afternoon
91°F 33°C
Sunny
Early-Evening
71°F 22°C
Scattered Showers
Hot and sweltering around 91°F 33°C, scattered downpours possible, with steady humidity and steady pressure. Winds building from SW at 4 mph 6 km/h to NNE at 18 mph 29 km/h. Gusts up to 25 mph 41 km/h.
Monday, September 7, 2026
Mid-Morning
70°F 21°C
Overcast
Mid-Afternoon
90°F 32°C
Partly Cloudy
Early-Evening
81°F 27°C
Sunny
Sizzling hot with 90°F 32°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds moving from the NW to the SE at 9 mph 15 km/h. Gusts up to 21 mph 33 km/h.
Tuesday, September 8, 2026
Mid-Morning
74°F 23°C
Partly Cloudy
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
77°F 25°C
Scattered Showers
Hot temperatures near 90°F 32°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds picking up from N at 2 mph 4 km/h to N at 13 mph 21 km/h.
Wednesday, September 9, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
87°F 30°C
Sunny
Early-Evening
77°F 25°C
Sunny
Very warm with a high of 87°F 30°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds shifting from the NNE to the ENE at 7 mph 11 km/h.
Thursday, September 10, 2026
Mid-Morning
73°F 23°C
Sunny
Mid-Afternoon
92°F 33°C
Sunny
Early-Evening
79°F 26°C
Sunny
Very hot with temperatures reaching 92°F 33°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds turning from the WSW to the NW at 7 mph 11 km/h.
Friday, September 11, 2026
Mid-Morning
76°F 24°C
Overcast
Mid-Afternoon
91°F 33°C
Partly Cloudy
Early-Evening
78°F 26°C
Overcast
Hot and sweltering around 91°F 33°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with increasing humidity and steady pressure. Winds out of the WSW at 9 mph 15 km/h.
Saturday, September 12, 2026
Mid-Morning
55°F 13°C
Overcast
Mid-Afternoon
72°F 22°C
Scattered Showers
Early-Evening
62°F 16°C
Overcast
Enjoyable around 72°F 22°C, scattered downpours possible, with increasing humidity and barometric pressure falling. Winds moving from the E to the SSE at 9 mph 14 km/h.
Sunday, September 13, 2026
Mid-Morning
61°F 16°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
64°F 18°C
Cloudy
Mild temperatures up to 77°F 25°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure rising. Winds SE at 14 mph 22 km/h.
Monday, September 14, 2026
Mid-Morning
49°F 9°C
Sunny
Mid-Afternoon
67°F 19°C
Sunny
Early-Evening
61°F 16°C
Sunny
Mildly cool near 67°F 19°C, sunny throughout the day, with lower humidity and steady pressure. Winds shifting from the E to the ESE at 8 mph 13 km/h.
Tuesday, September 15, 2026
Mid-Morning
57°F 14°C
Sunny
Mid-Afternoon
78°F 25°C
Sunny
Early-Evening
69°F 21°C
Sunny
Pleasant near 78°F 25°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the NNW to the ENE at 7 mph 11 km/h.
Wednesday, September 16, 2026
Mid-Morning
67°F 19°C
Sunny
Mid-Afternoon
89°F 32°C
Sunny
Early-Evening
76°F 24°C
Sunny
Balmy with temperatures reaching 89°F 32°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds switching from the SW to the ESE at 8 mph 13 km/h.
Thursday, September 17, 2026
Mid-Morning
71°F 22°C
Overcast
Mid-Afternoon
90°F 32°C
Cloudy
Early-Evening
79°F 26°C
Overcast
Sizzling hot with 90°F 32°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds moving from the WNW to the S at 9 mph 14 km/h.
Friday, September 18, 2026
Mid-Morning
78°F 26°C
Sunny
Mid-Afternoon
89°F 32°C
Overcast
Early-Evening
71°F 22°C
Scattered Showers
Warm temperatures up to 89°F 32°C, scattered downpours possible, with increasing humidity and steady pressure. Winds swinging from the W to the SSW at 7 mph 12 km/h.
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